<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<script type="text/javascript" src="js/index.js"></script>
<body>
<h1>${message}</h1>
<form method="post" action="/login">
    用户名：<input name="username"><br>
    密码：<input name="password"><br>
    <input type="submit" value="登录">
</form>
</body>
</html>